From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: rps perfomance WAS(Re: rps: question Date: Wed, 14 Apr 2010 11:53:52 -0700 Message-ID: <20100414115352.598521af@nehalam> References: <1265568122.3688.36.camel@bigi> <65634d661002072158r48ec15cag1ca58e704114a358@mail.gmail.com> <1265641748.3688.56.camel@bigi> <1271245986.3943.55.camel@bigi> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Tom Herbert , Eric Dumazet , netdev@vger.kernel.org, robert@herjulf.net, David Miller , Changli Gao , Andi Kleen To: hadi@cyberus.ca Return-path: Received: from mail.vyatta.com ([76.74.103.46]:33489 "EHLO mail.vyatta.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756401Ab0DNSyL (ORCPT ); Wed, 14 Apr 2010 14:54:11 -0400 In-Reply-To: <1271245986.3943.55.camel@bigi> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, 14 Apr 2010 07:53:06 -0400 jamal wrote: > Results: > CPU utilization was about 20-30% higher in the case of rps. On cpu0, the > cpu was being chewed highly by sky2_poll and on the redirected-to-core > it was always smp_call_function_single I posted a patch to use sky2 hardware hash (RSS) which should lower the cost per packet. --